Illumination device



FIG. 1 is a perspective view of an illumination device showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a second perspective view thereof.

The broken line showing of various features of the illumination device depicts environmental subject matter only and forms no part of the claimed design. 

The ornamental design for an illumination device, as shown and described. 